Intel Xeon LC3518 's Advantages
Higher base frequency (1.733GHz vs 1.5GHz)
Larger L3 cache size (2MB vs 1.5MB)
Lower TDP (23W vs 45W)
Intel Xeon D 1557 's Advantages
Released 6 years late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 45nm)